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Pablo

Calls

add_liquidity

Add liquidity to the given pool.

Emits LiquidityAdded event when successful.

Attributes

Name Type
pool_id T::PoolId
assets BTreeMap<T::AssetId, T::Balance>
min_mint_amount T::Balance
keep_alive bool

Python

call = substrate.compose_call(
    'Pablo', 'add_liquidity', {
    'assets': 'scale_info::176',
    'keep_alive': 'bool',
    'min_mint_amount': 'u128',
    'pool_id': 'u128',
}
)

buy

Execute a buy order on pool.

Emits Swapped event when successful.

Attributes

Name Type
pool_id T::PoolId
in_asset_id T::AssetId
out_asset AssetAmount<T::AssetId, T::Balance>
keep_alive bool

Python

call = substrate.compose_call(
    'Pablo', 'buy', {
    'in_asset_id': 'u128',
    'keep_alive': 'bool',
    'out_asset': {
        'amount': 'u128',
        'asset_id': 'u128',
    },
    'pool_id': 'u128',
}
)

create

Create a new pool. Note that this extrinsic does NOT validate if a pool with the same assets already exists in the runtime.

Emits PoolCreated event when successful.

Attributes

Name Type
pool PoolInitConfigurationOf<T>

Python

call = substrate.compose_call(
    'Pablo', 'create', {
    'pool': {
        'DualAssetConstantProduct': {
            'assets_weights': [
                ('u128', 'u32'),
            ],
            'fee': 'u32',
            'owner': 'AccountId',
        },
    },
}
)

enable_twap

Attributes

Name Type
pool_id T::PoolId

Python

call = substrate.compose_call(
    'Pablo', 'enable_twap', {'pool_id': 'u128'}
)

remove_liquidity

Remove liquidity from the given pool.

Emits LiquidityRemoved event when successful.

Attributes

Name Type
pool_id T::PoolId
lp_amount T::Balance
min_receive BTreeMap<T::AssetId, T::Balance>

Python

call = substrate.compose_call(
    'Pablo', 'remove_liquidity', {
    'lp_amount': 'u128',
    'min_receive': 'scale_info::176',
    'pool_id': 'u128',
}
)

swap

Execute a specific swap operation.

The quote_amount is always the quote asset amount (A/B => B), (B/A => A).

Emits Swapped event when successful.

Attributes

Name Type
pool_id T::PoolId
in_asset AssetAmount<T::AssetId, T::Balance>
min_receive AssetAmount<T::AssetId, T::Balance>
keep_alive bool

Python

call = substrate.compose_call(
    'Pablo', 'swap', {
    'in_asset': {
        'amount': 'u128',
        'asset_id': 'u128',
    },
    'keep_alive': 'bool',
    'min_receive': {
        'amount': 'u128',
        'asset_id': 'u128',
    },
    'pool_id': 'u128',
}
)

Events

LiquidityAdded

Liquidity added into the pool T::PoolId.

Attributes

Name Type Composition
who T::AccountId AccountId
pool_id T::PoolId u128
asset_amounts BTreeMap<T::AssetId, T::Balance> scale_info::176
minted_lp T::Balance u128

LiquidityRemoved

Liquidity removed from pool T::PoolId by T::AccountId in balanced way.

Attributes

Name Type Composition
who T::AccountId AccountId
pool_id T::PoolId u128
asset_amounts BTreeMap<T::AssetId, T::Balance> scale_info::176

PoolCreated

Pool with specified id T::PoolId was created successfully by T::AccountId.

Attributes

Name Type Composition
pool_id T::PoolId u128
owner T::AccountId AccountId
asset_weights BTreeMap<T::AssetId, Permill> scale_info::172
lp_token_id T::AssetId u128

Swapped

Token exchange happened.

Attributes

Name Type Composition
pool_id T::PoolId u128
who T::AccountId AccountId
base_asset T::AssetId u128
quote_asset T::AssetId u128
base_amount T::Balance u128
quote_amount T::Balance u128
fee Fee<T::AssetId, T::Balance> {'fee': 'u128', 'lp_fee': 'u128', 'owner_fee': 'u128', 'protocol_fee': 'u128', 'asset_id': 'u128'}

TwapUpdated

TWAP updated.

Attributes

Name Type Composition
pool_id T::PoolId u128
timestamp MomentOf<T> u64
twaps BTreeMap<T::AssetId, Rate> scale_info::180

Storage functions

LPTNonce

Python

result = substrate.query(
    'Pablo', 'LPTNonce', []
)

Return value

'u64'

PoolCount

Python

result = substrate.query(
    'Pablo', 'PoolCount', []
)

Return value

'u128'

Pools

Python

result = substrate.query(
    'Pablo', 'Pools', ['u128']
)

Return value

{
    'DualAssetConstantProduct': {
        'assets_weights': 'scale_info::172',
        'fee_config': {
            'fee_rate': 'u32',
            'owner_fee_rate': 'u32',
            'protocol_fee_rate': 'u32',
        },
        'lp_token': 'u128',
        'owner': 'AccountId',
    },
}

PriceCumulativeState

Python

result = substrate.query(
    'Pablo', 'PriceCumulativeState', ['u128']
)

Return value

{
    'base_price_cumulative': 'u128',
    'quote_price_cumulative': 'u128',
    'timestamp': 'u64',
}

TWAPState

Python

result = substrate.query(
    'Pablo', 'TWAPState', ['u128']
)

Return value

{
    'base_price_cumulative': 'u128',
    'base_twap': 'u128',
    'quote_price_cumulative': 'u128',
    'quote_twap': 'u128',
    'timestamp': 'u64',
}

Constants

PalletId

Value

'0x70616c5f70626c6f'

Python

constant = substrate.get_constant('Pablo', 'PalletId')

TWAPInterval

The interval between TWAP computations.

Value

120000

Python

constant = substrate.get_constant('Pablo', 'TWAPInterval')

Errors

AmpFactorMustBeGreaterThanZero

AssetAmountMustBePositiveNumber

AssetNotFound

CannotBuyAssetWithItself

Cannot buy an asset with itself.

CannotRespectMinimumRequested

CannotSwapSameAsset

Cannot swap an asset with itself.

IncorrectAssetAmounts

IncorrectPoolConfig

InitialDepositCannotBeZero

InitialDepositMustContainAllAssets

InvalidAmount

InvalidAsset

InvalidFees

InvalidPair

InvalidSaleState

MinAmountsMustContainAtLeastOneAsset

The min_amounts map passed to remove_liquidity must contain at least one asset.

MissingAmount

MissingMinExpectedAmount

MoreThanTwoAssetsNotYetSupported

MustBeOwner

MustDepositMinimumOneAsset

The assets map passed to add_liquidity must contain at least one asset.

NoLpTokenForLbp

NoXTokenForLbp

NotEnoughLiquidity

NotEnoughLpToken

PairMismatch

PoolNotFound

StakingPoolConfigError

UnsupportedOperation

WeightsMustBeNonZero

WeightsMustSumToOne